/* Copyright (c) 2012, Knowledge Media Institute
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *   * Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *   * Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *   * Neither the name of the <organization> nor the
 *     names of its contributors may be used to endorse or promote products
 *     derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package uk.ac.open.kmi.fusion.util;

import java.io.PrintWriter;
import java.util.Iterator;

import uk.ac.open.kmi.common.utils.Utils;
import uk.ac.open.kmi.fusion.learning.cache.CachedPair;
import uk.ac.open.kmi.fusion.learning.cache.MemoryInstanceCache;

public class LoggingUtils {

	private LoggingUtils() {
		// TODO Auto-generated constructor stub
	}
	
	public static void writeURIPairsToFile(MemoryInstanceCache cache, String fileName, boolean sampling) {
		try {
			PrintWriter writer = Utils.openPrintFileWriter(fileName);
			
			Iterator<CachedPair> iterator = cache.getComparablePairsIterator(sampling);
			
			CachedPair pair;
			while(iterator.hasNext()) {
				pair = iterator.next();
				writer.println(pair.getCandidateInstance().getUri().toString()+"\t"+pair.getTargetInstance().getUri().toString());
			}
			
			writer.close();
		} catch(Exception e) {
			e.printStackTrace();
		}
	}
	
	public static void writeURIPairsToFile(MemoryInstanceCache cache, String fileName) {
		try {
			PrintWriter writer = Utils.openPrintFileWriter(fileName);
			
			Iterator<CachedPair> iterator = cache.getAllPairsIterator();
			
			CachedPair pair;
			while(iterator.hasNext()) {
				pair = iterator.next();
				writer.println(pair.getCandidateInstance().getUri().toString()+"\t"+pair.getTargetInstance().getUri().toString());
			}
			
			writer.close();
		} catch(Exception e) {
			e.printStackTrace();
		}
	}

}
